CN113952641A

CN113952641A - Automatic braking descending protector with panic prevention function

Info

Publication number: CN113952641A
Application number: CN202111414141.4A
Authority: CN
Inventors: 宋豪; 徐文峰; 徐连龙; 李冲; 谢丹; 付浩月
Original assignee: Hangzhou High Angle Rescue Technology Development Co ltd; Qingdao Yihe Haili Safe Guarding Technologies Co ltd
Current assignee: Hangzhou High Angle Rescue Technology Development Co ltd; Qingdao Yihe Haili Safe Guarding Technologies Co ltd
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2022-01-21

Abstract

The invention discloses an automatic braking and descending protector with a panic prevention function, which comprises: a main body, one end of which is provided with a padlock part matched with the padlock and the other end of which is provided with a friction surface; the rope clamping assembly is arranged in the main body, and the rope penetrates through the rope clamping assembly; the handle is rotatably arranged on the outer side of the rope clamping assembly, and an extrusion assembly is arranged in the handle; wherein, the handle rotation stroke comprises a first section rotation range, a middle section rotation range and a tail section rotation range in sequence; when the handle is positioned in the first section rotation range and the last section rotation range, the rope is extruded to the friction surface by the rope clamping assembly to clamp and lock the rope; when the handle rotates to the middle rotation range, the squeezing assembly is abutted against a profile surface of the main body to weaken the clamping force of the rope clamping assembly and the friction surface and adjust the rope to descend. The descending protector can quickly lock the rope when an operator is frightened to grasp the handle, so that the personnel stop descending to avoid danger; the unlocking-free rope mounting design is adopted, and the whole structure is small and exquisite.

Description

Automatic braking descending protector with panic prevention function

Technical Field

The invention relates to the technical field of descending protectors, in particular to an automatic braking descending protector with a panic prevention function.

Background

The traditional steel gourd hook descending protector, splayed ring descending protector, porous descending protector and the like need to be knotted, then the window is turned over for escape, and precious escape self-rescue time is wasted.

The traditional descending protector needs to hold the free rope end by hands to apply pressure to control the descending speed in the descending process, and the mode not only enables an operator to be easy to fatigue, but also enables the operator to have the possibility of falling even if the operator is improper in operation, and is large in size, only suitable for large-diameter ropes and inconvenient to carry.

Disclosure of Invention

In order to solve the defects in the prior art, the invention provides an automatic braking and descending protector with a panic prevention function.

The technical scheme of the invention is as follows:

the invention provides an automatic braking and descending protector with a panic prevention function, which comprises:

the padlock comprises a main body, wherein one end of the main body is provided with a padlock part matched with the padlock, and the other end of the main body is provided with a friction surface;

a cable clamping assembly disposed within the body, a cable passing through the cable clamping assembly;

the handle is rotatably arranged on the outer side of the rope clamping assembly, and an extrusion assembly is arranged in the handle;

wherein, the rotation process of the handle rotation stroke from the initial position to the end position comprises a first section rotation range, a middle section rotation range and an end section rotation range in sequence; when the handle is positioned in the first-segment rotating range and the last-segment rotating range, the rope is extruded to a friction surface by the rope clamping assembly to clamp and lock the rope; when the handle rotates to the middle section rotating range, the extrusion assembly is abutted to a profile surface of the main body to weaken the clamping force of the rope clamping assembly and the friction surface, and the rope is adjusted to descend.

Further, the cord clamping assembly comprises:

a central rotating shaft;

the cam base is fixedly connected with the main body through the central rotating shaft; the handle is rotatably arranged on the cam base;

the cam is hinged with the cam base through the central rotating shaft and is provided with a cam friction part which is matched with the friction surface to clamp the rope;

the rotary spring is arranged between the central rotating shaft and the cam and can enable the cam to rotate around the central rotating shaft to reset;

a handle rotating shaft is arranged between the handle and the cam base;

the main body is provided with a main body limiting contour surface which can be matched with the extrusion assembly;

wherein a gap exists between the cam friction part and the friction surface, and the rope penetrates through the gap; the handle rotates to the middle section rotating range, the extrusion assembly is abutted to the main body limiting contour surface and provides a thrust force for the cam base connected with the handle, the thrust force is larger than the rope friction force between the cam friction part and the friction surface, the cam rotates, the gap between the cam friction part and the friction surface is increased along with the rotation of the cam, and the rope is adjusted to descend;

when the handle rotates to the end rotating range, the extrusion assembly is automatically separated from the main body limiting contour surface, the cam is rotated and reset by the rotary spring, the gap between the cam friction part and the friction surface is reduced along with the cam reset, and the rope is clamped and locked by the cam friction part and the friction surface again.

Further, the main body includes:

one end of the main body base is fixedly provided with a friction component, the friction surface is a surface of the friction component close to the cam, and the other end of the main body base is provided with a first hole for a padlock;

one end of the sliding cover is provided with a second hole for a padlock, the second hole is rotatably connected with the first hole through a rotating shaft sleeve, and the other end of the sliding cover is clamped with the friction assembly;

the main body limiting contour surface is arranged on the main body base;

the middle part of the main body base is fixedly connected with the cam base through the central rotating shaft.

Furthermore, the handle comprises a rotating connecting part and a handheld part integrated with the rotating connecting part, the rotating connecting part is rotatably connected with the cam base through the handle rotating shaft, a handle spring is installed between the rotating connecting part and the cam base, the handle rotating shaft penetrates through the handle spring, and the handle can be reset through the handle spring; a first guide groove is formed in the rotating connecting part;

the extrusion assembly comprises a wedge block and a compression spring; the wedge block is arranged in the rotating connecting part, and one end of the wedge block is arranged in the first guide groove; the compression spring is arranged in the first guide groove, one end of the compression spring is abutted against the wedge block, and the other end of the compression spring is abutted against the inner wall of the first guide groove;

the wedge block extends out of the working portion downwards, when the handle rotates to the middle section rotating range, the side face of the working portion is in contact with the limiting outer contour of the main body base and extrudes the wedge block to generate extrusion force, the extrusion force is transmitted to the handle, the handle is transmitted to the cam base, the rope friction force between the cam and the friction surface is reduced, the rope friction force is smaller than the self weight of an operator, and the operator descends.

Further, the friction assembly comprises a friction block, the friction block is arranged close to the cam side to form the friction surface, and the friction surface is a plane; the top of the friction block is provided with a first mounting hole and a second mounting hole, and the first mounting hole is fixedly connected with the main body base through a rivet; the second mounting hole is connected with an elastic bolt component, and the elastic plug-in component comprises a button;

the sliding cover is locked after the button is inserted into the second mounting hole, and the sliding cover cannot rotate around the rotating shaft sleeve and is in a closed state; and the sliding cover can rotate around the rotating shaft sleeve to an open state.

Further, the elastic bolt component comprises the button, a button plug, a button spring and a plug which are arranged in the second mounting hole from top to bottom in sequence.

Further, the cam friction part structure is a radially convex arc structure.

Furthermore, a rope guide part is further arranged on the outer surface of the sliding cover, and the rope guide part is of an extended hook structure.

Further, the number of the rope guide parts is two, the rope guide parts are respectively arranged on the left side and the right side of the outer surface, and the hook directions of the hook structures are opposite.

Further, the angle corresponding to the first rotation range is 0 ° < θ <150 °, the angle corresponding to the last rotation range is 160 ° < θ <165 °, and the middle rotation range is located between the first rotation range and the last rotation range.

The invention achieves the following beneficial effects:

the invention adopts the self-locking of the rope clamping assembly and the main body to realize the function of off-hand braking, and even if an operator looses the handle by mistake, the friction force of the rope on the cam and the elastic force of the rotary spring of the cam are combined to cause the cam to automatically reset to the initial position, thereby realizing the automatic clamping and locking of the rope; the anti-panic device has an anti-panic function, if an operator is in panic due to frightening and other situations in the descending process, the operator can firmly grasp all objects at the side as much as possible at the moment, no matter which direction the operator applies excessive force to the handle, the handle can not stay in the middle section rotating range, and the descending protector can quickly lock the rope when the operator is frightened to grasp the handle, so that the operator stops descending to avoid danger; the anti-unlocking rope-installing device is also designed to be free of unlocking and locking, and has a small and exquisite integral structure and ingenious design.

Drawings

Fig. 1 is an overall schematic view of a descent protector according to an embodiment of the present invention.

Fig. 2 is an exploded view of a viewing angle structure according to an embodiment of the invention.

Fig. 3 is an exploded view of another perspective structure according to an embodiment of the invention.

Fig. 4 is a schematic view of the structure of the rope wound after the sliding cover is opened.

Figure 5 is a schematic view of the fall protector after installation of the line, i.e. padlock.

FIG. 6 is a schematic view of the cam distance d from the friction pack.

Fig. 7 is a schematic view of the cable clamp dead cam and friction pack distance d.

Fig. 8 is a partially cut-away schematic view of the drop protector when the twist grip reaches the first twist range in accordance with one embodiment of the present invention.

Fig. 9 is a partial cross-sectional view of the drop protector shown in fig. 9 when the swing handle reaches a mid-swing range in accordance with an embodiment of the present invention.

Fig. 10 is a partial cross-sectional schematic view of the drop protector when the twist grip reaches the end twist range of one embodiment of the present invention.

In the figure, 100, main body; 110. a main body base; 111. a main body limiting contour surface; 112. a friction assembly; 1120. a friction block; 1121. a friction surface; 1122. a first mounting hole; 1123. a second mounting hole; 1124. riveting; 1125. a button; 1126. a button plug; 1127. a button spring; 1128. plugging with a thread; 113. a first hole; 114. a boss table; 115. a raised block; 116. a column; 120. a sliding cover; 121. a second hole; 122. a rope guide portion; 130. a rotating shaft sleeve; 200. a cable clamping assembly; 210. a central rotating shaft; 220. a cam base; 230. a cam; 231. a cam friction portion; 240. a return spring; 300. a handle; 310. a handle shaft; 320. a transfer connection part; 321. a first guide groove; 322. a second guide groove; 330. a hand-held portion; 340. a handle spring; 350. an extrusion assembly; 351. a wedge block; 352. a compression spring; 400. a rope; 500. a padlock is provided.

Detailed Description

In the description of the present application, it is to be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

It should also be noted that, unless expressly stated or limited otherwise, the terms "disposed" and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

To facilitate understanding of the present invention by those skilled in the art, a specific embodiment of the present invention will be described below with reference to fig. 1 to 10.

As shown in fig. 1 to 3, the present invention provides an automatic braking and descending protector with a panic function, including:

a main body 100, a latch part engaged with the padlock 500 is provided at a lower part of the main body 100, and a friction surface 1121 is provided at the other end;

a rope clamping assembly 200 disposed within the body 100, the rope 400 passing through the rope clamping assembly 200;

a handle 300 rotatably installed at an outer side of the rope clamping assembly 200, the handle 300 having a pressing assembly 350 therein;

wherein, the rotation process of the handle 300 from the initial position to the end position comprises a first rotation range, a middle rotation range and an end rotation range in sequence; when the handle 300 is located in the first rotation range and the last rotation range, the rope 400 is pressed by the rope clamping assembly 200 to the friction surface 1121 to clamp and lock the rope 400; the pressing member 350 abuts against a contoured surface of the body 100 to weaken the clamping force of the cable clamping member 200 against the friction surface 1121 to adjust the lowering of the cable 400 when the handle 300 is rotated to the middle rotation range.

Therefore, the rope 400 can be automatically clamped and locked, and meanwhile, the anti-panic function is realized, so that the operator can quickly lock the rope 400 when being frightened to grasp the handle 300, and the personnel can stop descending to avoid danger.

Specifically, the cable clamping assembly 200 includes a central spindle 210, a cam base 220, a cam 230, and a return spring 240. The body 100 includes a body base 110 and a slide cover 120. The handle 300 includes a rotation connection part 320 and a hand-held part 330 integrated with the rotation connection part 320, and further includes a handle rotation shaft 310 and a handle spring 340. Compression assembly 350 includes a wedge 351 and a compression spring 352.

The invention is suitable for the small-diameter rope 400, has small volume, greatly reduces the load and is convenient to carry.

The cam base 220 is fixedly coupled to the body base 110 through the central rotation shaft 210. The handle 300 is rotatably mounted to the cam base 220. A handle rotation shaft 310 is installed between the handle 300 and the cam base 220.

The cam 230 is hinged to the cam base 220 through the central rotating shaft 210, and the cam 230 is provided with a cam friction portion 231 which cooperates with the friction surface 1121 to clamp the rope 400. The cam friction portion 231 is provided in a radially protruding circular arc structure. And a rotation spring 240 disposed between the central rotation shaft 210 and the cam 230 to rotatably restore the cam 230 about the central rotation shaft 210. The return spring 240 may be a torsion spring.

In this embodiment, in order to more accurately position the cam 230 on the cam base 220, a boss 114 matched with the cam 230 is protruded at a corresponding position of the cam base 220, and the cam 230 is configured in a shell shape and is sleeved outside the boss 114. The raised platform 114 may be a unitary structure with the cam base 220.

The body base 110 is provided with a body limiting contour surface 111 capable of being matched with the wedge 351, and the body limiting contour surface 111 is a curved surface which has the same motion track with the stress surface of the wedge 351 in the middle rotation range of the handle 300.

The middle of the main body base 110 is fixedly connected to the cam base 220 through the central rotating shaft 210.

The friction member 112 is mounted on one end of the main body base 110, one surface of the friction member 112 close to the cam 230 is a friction surface 1121, and the other end is opened with a first hole 113 for the padlock 500. The friction assembly 112 includes a friction block 1120, the friction block 1120 is disposed on a friction surface 1121 near the cam 230, and the friction surface 1121 is a plane. The friction block 1120 is provided at the top thereof with a first mounting hole 1122 and a second mounting hole 1123, the first mounting hole 1122 is fixedly connected to the main body base 110 via a rivet 1124, and the second mounting hole 1123 is connected to an elastic plug pin assembly.

As shown in fig. 2, the elastic insert assembly includes the button 1125, the button plug 1126, the button spring 1127 and the plug 1128 installed in the second installation hole 1123 in sequence from left to right.

In this embodiment, in order to more accurately position the friction assembly 112 on the main body base 110, a protruding block 115 matched with the friction assembly 112 is protruded from a corresponding position of the main body base 110, and the friction block 1120 is configured in a shell shape and is sleeved outside the protruding block 115. The bumps 115 may be of unitary construction with the body base 110.

One end of the sliding cover 120 is provided with a second hole 121 for the padlock 500, the second hole 121 is rotatably connected with the first hole 113 through the rotating shaft sleeve 130, and the first hole 113 and the second hole 121 are connected in a concentric structure through the rotating shaft sleeve 130, so that the function of rope installation can be realized without removing the padlock 500, and the loss of the rope due to the loss of hands caused by other reasons during operation can be guaranteed. The first hole 113 and the second hole 121 of the rotating shaft sleeve 130 form a safety hook hanging hole for the padlock 500. The other end of the sliding cover 120 is clamped with the friction component 112 through an elastic bolt component, an operator presses the button 1125, the sliding cover 120 is disconnected from the main body base 110, and the sliding cover 120 can rotate relative to the main body base 110; when the sliding cover 120 needs to be fixed to the body base 110, the sliding cover 120 is rotated back to the position of the button 1125, and the sliding cover 120 is engaged with the body base 110.

The cam friction portion 231 has a gap from the friction surface 1121, and the rope 400 penetrates through the gap.

The rotation connecting part 320 of the handle 300 is rotatably connected with the cam base 220 through the handle rotation shaft 310, a handle spring 340 is installed between the rotation connecting part 320 and the cam base 220, the handle rotation shaft 310 penetrates through the handle spring 340, and the handle 300 can be reset through the handle spring 340. The handle spring 340 is a torsion spring. The rotation connecting portion 320 has a first guide groove 321 and a second guide groove 322 formed therein.

The wedge 351 is installed inside the rotation connecting part 320, and one end of the wedge 351 is installed in the first guide groove 321. The compression spring 352 is installed in the first guide groove 321, and one end of the compression spring 352 abuts against the wedge 351 and the other end abuts against the inner wall of the first guide groove 321.

In order to more precisely position the handle 300 mounted on the cam base 220, a post 116 engaged with the cam 230 is protruded at a corresponding position of the cam base 220, and the post 116 is mounted in the second guide groove 322. The post 116 is of unitary construction with the cam base 220.

When the handle 300 rotates to the middle rotation range, the pressing member 350 abuts against the main body limiting contour surface 111 and applies a pushing force to the cam base 220 connected to the handle 300, the pushing force is greater than the friction force of the rope 400 between the cam friction part 231 and the friction surface 1121, the cam 230 rotates, the gap between the cam friction part 231 and the friction surface 1121 increases with the rotation of the cam 230, and the adjusting rope 400 descends.

When the handle 300 rotates to the end rotation range, the pressing assembly 350 is automatically separated from the main body limiting contour surface 111, the cam 230 is rotated and reset by the rotating spring 240, the gap between the cam friction part 231 and the friction surface 1121 is reduced along with the reset of the cam 230, and the rope 400 is clamped and locked by the cam friction part 231 and the friction surface 1121 again.

As shown in fig. 4 to 5, the safety hook hole padlock 500 is provided at the lower end of the main body 100 of the descending protector, and the cam 230 of the rope clamping assembly 200 and the friction assembly 112 of the main body base 110 clamp the rope 400, so that the descending protector can be stopped from being manually stopped, that is, the descending protector is normally closed after being stressed. To facilitate the clear view of the connection between the cam 230 and the friction member 112, the slide cover 120 is opened and rotated to the side, and in actual use, the slide cover 120 and the main body base 110 are engaged (as shown in fig. 5). In fig. 4, the left end of the rope 400 is a fixed end, and the right end of the rope 400 is a rope control end.

A rope guide 122 is further provided on an outer surface of the slide cover 120, and the rope guide 122 is an extended hook structure.

As shown in fig. 5, in this embodiment, the number of the rope guide portions 122 is two, and the rope guide portions are respectively provided on the left and right sides of the outer surface, and the hooking directions of the hooking structures are opposite.

The winding of the rope 400 will now be described with reference to fig. 4 to 5:

the sliding cover 120 of the descending protector faces the operator, and the safety hook hole faces downwards and is horizontally placed;

pressing button 1125 opens slider 120 counterclockwise until it does not interfere with loading;

winding the rope 400 in the manner shown in the figure, closing the sliding cover 120 clockwise after winding, and fastening the button 1125 with the sliding cover 120;

the rope control end is then passed around two rope guides 122 on the outer surface of the slide cover 120.

The weight of an operator is transmitted to the hanging lock part on the descending protector through the hook, the descending protector is driven to move downwards, the cam 230 wound with the rope 400 is subjected to friction and stress by the rope 400 to rotate, the cam friction part 231 on the cam 230 extrudes the rope 400 onto an abrasion surface, and therefore the rope is completely extruded and pressed, and the purposes of locking and preventing falling are achieved. Since the cam 230 is completely fixed with the cam base 220, the cam base 220 rotates by the same angle as the cam 230.

For convenience of description of the technical solution, θ is set as an angle of rotation of the handle 300; d is set as the distance between the friction surface of the cam 230 and the friction surface of the friction sleeve; f is set as the pulling force applied by the operator to the handle 300; f₁The wedge 351 is set to be subjected to the reaction force of the outer contour of the base; f_{Combination of Chinese herbs}The cam base 220 is configured to be subjected to the resultant force of the handle 300.

As shown in fig. 6, the drop protector is in the initial state and the distance d is at a maximum.

As shown in fig. 7, the fall protector is in a braking state, the rope 400 is clamped and locked, the cam 230 is rotated clockwise, and the distance d is a minimum.

In this embodiment, the first rotation range corresponds to an angle of 0 ° < θ <150 °, the middle rotation range is 150 ° < θ < 160 °, and the end rotation range corresponds to an angle of 160 ° < θ <165 °.

The descender is locked when the handle 300 is rotated between 0 < theta <150 deg. and 160 < theta <165 deg.; the rotation angle of the handle 300 is in a descending state only when theta is larger than or equal to 150 degrees and smaller than or equal to 160 degrees, so that the situation that people escape due to two reasons during escape is avoided, the first is that the whole person is in a panic state and cannot do anything, and the second is that all objects capable of being grasped around the person can be grasped tightly after the person is in panic for a short time, the rope 400 can be locked quickly when the operator is frightened to grasp the handle 300, so that the person stops descending to avoid danger, the design is more humanized, and the use safety is improved.

As shown in fig. 8, the handle 300 is in the first rotation range, i.e. the handle 300 angle is 0 ° < θ <150 °, the handle 300 is pulled in the direction of force F shown, which is perpendicular to the handle 300, the handle 300 rotates clockwise with the wedge 351 inside, and when it is rotated through an angle less than 150 °, the wedge 351 does not contact the outer contour of the base. I.e. the resultant torque experienced by the cam 230 is in the direction of N as shown in the figure, which converts the weight of the person into friction and squeezing force between the rope and the fall protector, thereby causing the rope to seize. As can be seen, the handle 300 is in the first rotation range, and the wedge 351 in the handle 300 is not in contact with the body limiting contour surface 111.

As shown in FIG. 9, the middle rotation range corresponds to an angle θ of 150 ° ≦ 160 °, and the force is continuously applied in the direction F, the wedge 351 contacts with the body stopper contour surface 111 and generates an interaction force, and the wedge 351 receives the force F1 from the body base 110. Since the wedge 351 is mounted on the handle 300, the force F₁Will be transferred to the handle 300. The handle 300 is mounted on the cam base 220, and the resultant force of the handle 300 to the cam base 220 is a force F_{Combination of Chinese herbs}. Force F is generated as cam base 220 rotates about body base 110_{Combination of Chinese herbs}A clockwise moment N is generated on the cam base 220, i.e. opposite to the moment M in fig. 4, when the force F is applied_{Combination of Chinese herbs}Continued increase will cause the cam 230 to decrease in pressure against the friction fit rope 400, which will reduce the friction between the fall protector and the rope 400, and when this friction is less than the operator's own weight, the operator will begin to fall.

As shown in fig. 10, the angle corresponding to the end rotation range is 160 °<θ<165 degrees, because the contact position of the main body limiting contour surface 111 and the wedge block 351 adopts a curve matched with the motion track of the wedge block 351, F_{Combination of Chinese herbs}When the distance d reaches the maximum value, the wedge 351 is separated from the body limiting contour 111 and no longer contacts the body limiting contour, and the cam base 220 is pushed by the handle 300 to the maximum value F_{Combination of Chinese herbs}At an instant of zero. The cam 230 returns to the state of being pressed by the cam 230, the rope 400 and the friction surface 1121 under the action of the friction torque generated by the rope 400 and the pull-back force of the rotary spring 240, that is, the resultant torque is in the direction of M shown in the figure, and the torque converts the gravity of the human body into the friction force and the extrusion force between the rope 400 and the descending protector, so that the rope is stuck and the operator stops descending.

The above-described embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An automatic arrest descent control protector with panic function, comprising:

the padlock comprises a main body (100), wherein one end of the main body (100) is provided with a padlock part matched with the padlock (500), and the other end of the main body is provided with a friction surface (1121);

a rope clamping assembly (200) disposed within the body (100), a rope (400) passing through the rope clamping assembly (200);

the handle (300) is rotatably arranged on the outer side of the rope clamping assembly (200), and a squeezing assembly (350) is arranged inside the handle (300);

wherein, the rotation process of the rotation stroke of the handle (300) from the initial position to the end position comprises a first section rotation range, a middle section rotation range and an end section rotation range in turn; when the handle (300) is positioned in the first rotation range and the last rotation range, the rope (400) is extruded to the friction surface (1121) by the rope clamping assembly (200) to clamp and lock the rope (400); when the handle (300) rotates to the middle rotation range, the squeezing assembly (350) is abutted against a profile surface of the main body (100) to weaken the clamping force of the rope clamping assembly (200) and a friction surface (1121), and the rope (400) is adjusted to descend.

2. The automatic arrest descent protector with panic function according to claim 1, characterized in that said cable clamping assembly (200) comprises:

a central rotating shaft (210);

the cam base (220) is fixedly connected with the main body (100) through the central rotating shaft (210); the handle (300) is rotatably arranged on the cam base (220);

the cam (230) is hinged with the cam base (220) through the central rotating shaft (210), and the cam (230) is provided with a cam friction part (231) which is matched with the friction surface (1121) to clamp the rope (400);

a rotary spring (240) disposed between the central rotary shaft (210) and the cam (230) and capable of rotationally restoring the cam (230) around the central rotary shaft (210);

a handle rotating shaft (310) is arranged between the handle (300) and the cam base (220);

the main body (100) is provided with a main body limiting contour surface (111) which can be matched with the extrusion assembly (350);

wherein a gap exists between the cam friction part (231) and the friction surface (1121), and the rope (400) penetrates through the gap; the handle (300) rotates to a middle rotation range, the extrusion assembly (350) is abutted against the main body limiting profile surface (111) and provides a thrust force for the cam base (220) connected with the handle (300), the thrust force is greater than the friction force of the rope (400) between the cam friction part (231) and the friction surface (1121), the cam (230) rotates, the gap between the cam friction part (231) and the friction surface (1121) is increased along with the rotation of the cam (230), and the rope (400) is adjusted to descend;

when the handle (300) rotates to the end rotating range, the extrusion assembly (350) is automatically separated from the main body limiting profile surface (111), the cam (230) is rotated and reset by the rotating spring (240), the gap between the cam friction part (231) and the friction surface (1121) is reduced along with the reset of the cam (230), and the rope (400) is clamped and locked by the cam friction part (231) and the friction surface (1121) again.

3. The automatic arrest descent protector with panic function according to claim 2, characterized in that said main body (100) comprises:

the padlock fixing device comprises a main body base (110), wherein a friction component (112) is fixedly arranged at one end of the main body base (110), the friction surface (1121) is one surface of the friction component (112) close to the cam (230), and a first hole (113) for the padlock (500) is formed in the other end of the friction surface;

one end of the sliding cover (120) is provided with a second hole (121) used for a padlock (500), the second hole (121) is rotatably connected with the first hole (113) through a rotating shaft sleeve (130), and the other end of the sliding cover (120) is clamped with the friction component (112);

the main body limiting contour surface (111) is arranged on the main body base (110);

the middle part of the main body base (110) is fixedly connected with the cam base (220) through the central rotating shaft (210).

4. The automatic braking and descending protector with the panic function according to claim 3, wherein said handle (300) comprises a rotation connecting part (320) and a hand-held part (330) integrated with said rotation connecting part (320), said rotation connecting part (320) is rotatably connected with said cam base (220) through said handle rotating shaft (310), a handle spring (340) is installed between said rotation connecting part (320) and said cam base (220), the handle rotating shaft (310) passes through the handle spring (340), the handle (300) can be reset through the handle spring (340); a first guide groove (321) is formed in the rotating connecting part (320);

the compression assembly (350) comprises a wedge (351) and a compression spring (352); the wedge block (351) is installed inside the rotation connecting part (320), and one end of the wedge block is arranged in the first guide groove (321); the compression spring (352) is installed in the first guide groove (321), one end of the compression spring (352) is abutted against the wedge block (351), and the other end of the compression spring is abutted against the inner wall of the first guide groove (321);

the wedge block (351) extends out of the working portion downwards, when the handle (300) rotates to the middle section rotating range, the side face of the working portion is in contact with the limiting outer contour of the main body base (110) and extrudes the wedge block (351) to generate extrusion force, the extrusion force is transmitted to the handle (300), the handle (300) is transmitted to the cam base (220), the friction force of the rope (400) between the cam (230) and the friction surface is reduced, the friction force of the rope (400) is smaller than the self weight of an operator, and the operator descends.

5. The automatic braking descent protector with panic function according to claim 4, characterized in that said friction assembly (112) comprises a friction block (1120), said friction block (1120) is disposed as said friction surface (1121) near the cam (230) side, said friction surface (1121) is a plane; the top of the friction block (1120) is provided with a first mounting hole (1122) and a second mounting hole (1123), and the first mounting hole (1122) is fixedly connected with the main body base (110) through a rivet (1124); a resilient plug assembly is connected to the second mounting hole (1123), the resilient plug assembly including a button (1125);

the sliding cover (120) is locked after the button (1125) is inserted into the second mounting hole (1123), and the sliding cover (120) cannot rotate around the rotating shaft sleeve (130) and is in a closed state; pressing the button (1125) disengages the button (1125) from the second mounting hole (1123), and the slide cover (120) can rotate about the swivel sleeve (130) to an open state.

6. The auto stop drop protector with panic function according to claim 5, characterized in that said elastic plug assembly comprises, from top to bottom, said push button (1125) mounted in a second mounting hole (1123), a push button plug (1126), a push button spring (1127) and a plug (1128).

7. The automatic braking descent control protector with the panic function according to any one of claims 1 to 6, wherein: the cam friction part (231) is in a radially convex arc structure.

8. The automatic arrest descent control protector with panic function according to claim 3, characterized in that: the outer surface of the sliding cover (120) is also provided with a rope guide part (122), and the rope guide part (122) is of an extended hook structure.

9. The automatic arrest descent control protector with panic function according to claim 8, characterized in that: the number of the rope guide parts (122) is two, the rope guide parts are respectively arranged on the left side and the right side of the outer surface, and the hook directions of the hook structures are opposite.

10. The automatic arrest descent control protector with panic function according to claim 1, characterized in that: the angle corresponding to the first section rotation range is 0 degrees < theta <150 degrees, the angle corresponding to the last section rotation range is 160 degrees < theta <165 degrees, and the middle section rotation range is located between the first section rotation range and the last section rotation range.